package com.qf.web.controller;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;

/**
 * projectName:day15_myxiaomi
 * author:lcy
 * time:2023/11/26 10:38
 * description:
 */
public class BaseServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("UTF-8");
        String methodName=request.getParameter( "method");
        try {
            Method method = this.getClass().getMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);
            if (method != null) {
              String url= (String) method.invoke(this,request,response);
                if (url == null||url.trim().length()==0) {
                    return;
                }
                if (url.startsWith("redirect:")){
                    String redirectURL = url.substring(url.indexOf(":") + 1);
                    response.sendRedirect(request.getContextPath()+redirectURL);
                }else{
                        request.getRequestDispatcher(url).forward(request, response);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }
}


